Charles f



( 0 Model!) 0. F. BARRETT.

VALVE.

Patented Oct. 2, 1883.

Um. I jaw-171. 1% I UNITED STATES PATENT Unites.

CHARLES F. BARRETT, OF NEIV YORK, N. Y.

VALVE.

SPECIFICATION forming; part of Letters Patent No. 285,871, dated Octolcer 2, 1883. Application filed December 1 1, IP82. (Nomodeh) .To all whom it may concern:

Be it known that I, CHARLES F. BARRETT,

a citizen of the United States, residing in the city of New York, county of New York, and State of New York, have invented certain new and useful Improvements in Valves, fully described and represented in the following specification and, the accompanying drawings, forming a part of the same.

This invention relates to that class of valves which are most commonly used in water, steam, gas, and other pipes to regulate and control the flow and pressure of the liquid, steam, or other fluid. These valves commonly consist of a disklike head attached to a screwihreaded stem extending through the casing in which the valve is located, and. provided with a handle by which it can; be operated to move the valve to and from its seat, the seat being provided with an opening through which the liquid, steam, or other fluid passes when the valve is raised. It is found in prac tice that the rotary movement thus given to the valve in opening and closing has a constant tendency to wear the valve and seataway, so that valves of this construction which are frequently opened and closed soon become so worn as to require renewal.

In the constructions heretofore adopted the valve-seat has been made integral with the casing, so that the renewal of the seat entailed the expense of a new casing and the trouble of removing the same from the supply-pipe.

It is the object of the present invention, among otherthings, to lessen the expense and trouble attending the renewal of worlrout parts; and to this end one feature of the invention consists in making both the valve and seat removable, so that either or both can be renewed, when worn, without changing the remainder of the apparatus.

Another object of the invention is to increase the durability of the valve and seat; and to this end another feature of the invention consists .in making both the valve and seat reversible, so that when one of their surfaces is so worn as to be worthless they can be reversed, thereby presenting entirely new bearing-surfaces.

In the accompanying drawings, Figure 1 is a vertical section of a valve apparatus embodying the invention in one of its forms. Fig. 2 is an elevation, upon an enlarged scale, of the valve detached from its stem. Fig. 3 is a like view of the valve-seat. Fig. L is a plan view of Fig. 2. Fig. 5 is a like view of Fig. 3; and Fig. 6 is a sectional detail, showing a different way of attaching the valve to its stem.

As shown in the drawings, the apparatus consists of the usual easing, 1, provided with a transverse partition, 2, whielrsupports the valve-seat 3, said casing being provided with an opening of sufficient size to permit the passage of the valve and seat, which opening is closed by a screw-plug, 5, in which works a screw-rod, (3, to the end of which is secured the valve 7. The casing 1 is provided with the usual threaded portions, 8, to receive the ends of the supply-pipe, and the plug 5 is provided with the usual stuiiingbox, 9,t make a tight joint around the rod (5.

The valve-seat 3, instead of being formed in or made integral with the partition 2, is made separate therefrom, it being provided upon its outer periphery with a flange, 10, which rests upon the edge of the openingin the partition,

, and is secured theretobymeans of screws passing through holes 11. Instead of being pro vided with. a flange 10', as shown, the valveseat may, if preferred, be provided with screwthreads, which engage with corresponding threads upon the edge of the opening in the partition, so that the seat can be screwed into and out of position. The inner periphery of the valve-seat is provided with a narrow flange, 12, in which are cut a series ofnicks, 13, which can be engaged by asuitablc tool for removing and inserting the seat.

The valve-rod 6 is provided at itsinner end with a head, 1.4, above which restsa collar, 15, the under side of which is provided with an annular screw-threaded projection, 1.6, which is adapted to engage with the interior thread ed portions, 17, of the valve and secure it to the rod, as shown in Fig. 1. I

By reference to the drawings it will be observed that the opposite edges, 18 1'9, of the valve-seat are both so shaped as to afford bearing-surfaces for the valve, and that the oppo site edges, 20 21, of the valve are so shaped as to fit these bearing-surfaces. From this con IOO . become so worn as to be worthless a practical -the other tongued. The order of the grooving struction and arrangement it will be scent-hat when one edge of the valve, as 20, and one of the bearing-surfaces of the seat, as 18, have renewal of the worn-out parts can be effected by simply removing the plug 5 and reversing the valve and seat so as to bring the edges 19 21 into co-operative relation. It will also be seen that when both edges of the valve and seat have become so worn as to be worthless they can be readily replaced by new parts without disturbing or sacrificing the remainder of the apparatus, thus saving much annoyance and expense.

A part of the advantages of the invention as thus far described may, as will readily be seen, be secured by simply making the valve and seat removable in the mannershown, with out making them reversible.

i The advantages of a removable and reversible valve and seat may be secured when the meet ing edges of the valve and seat are of any ordinary form; but I have found that the apparatus is much more reliable and satisfactory when the meeting surfaces are of the form shown that is to say, when one surface is grooved and and tonguing may of course be varied from what is shown. Both edges of the seat may be. grooved, as 19, or both may be tongued, as 18, the edges of the valve being the reverse.

The valve, instead of being secured to its rod l 1. The combination, with the casing l and.

rod- 6, of the removable valve and removable seat, substantially as and for the forth.

2. The combination, with the casing 1 and rod 6, of a reversible valve, as 7, anda reversipurpose set ble valve-seat, as 3, substantially as set forth.

3. The combination, with the casing 1 and rod 6, of a reversible valve, as 7, and areversible valve-seat, as 3,the opposite edges of both valve and seat being provided with co-operating grooves and tongues, substantially as set forth.

4. A removable valve-seat, as 3, provided upon its inner periphery with notches or projections to receive asuitabletool for removing the same, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

CHARLES F. BARRETT.

\Vitnesses:

J AS. A. HOVEY, T. H. PALMER. 

